Ticket #22856: 22856.4.diff

wp-includes/class-wp-theme.php

@@ -206 +206 @@
                         $this->headers['Name'] = $this->stylesheet;
                         if ( ! file_exists( $this->theme_root . '/' . $this->stylesheet ) )
                                 $this->errors = new WP_Error( 'theme_not_found', __( 'The theme directory does not exist.' ) );
+                        elseif ( ! glob( $this->theme_root . '/' . $this->stylesheet . '/*' ) )
+                                $this->errors = new WP_Error( 'theme_no_files', __( 'The theme directory does not contain a theme.' ) );
                         else
                                 $this->errors = new WP_Error( 'theme_no_stylesheet', __( 'Stylesheet is missing.' ) );
                         $this->template = $this->stylesheet;
@@ -441 +443 @@
          * Whether the theme exists.
          *
          * A theme with errors exists. A theme with the error of 'theme_not_found',
-         * meaning that the theme's directory was not found, does not exist.
+         * or 'theme_no_files' meaning that the theme's directory was not found, or
+         * doesn't contain any files, does not exist.
          *
          * @since 3.4.0
          * @access public
@@ -449 +452 @@
          * @return bool Whether the theme exists.
          */
         public function exists() {
-                return ! ( $this->errors() && in_array( 'theme_not_found', $this->errors()->get_error_codes() ) );
+                return ! ( $this->errors() && array_intersect( array( 'theme_not_found', 'theme_no_files' ), $this->errors()->get_error_codes() ) );
         }
 
         /**